Model HT (High Temp.) Non-metalalic Casing Spacers

A unique formulation of polymers is used in the manufacture of the Hi-Temp isolators/spacers giving them the ability to be used for applications that may reach 266-degrees F. (130°). In addition to heat resistance, they also offer excellent insulation, high abrasion resistance and low coefficient of friction for a wide variety of double containment carrier/casing pipe applications. Light in weight and easy to handle during installation, Model HT casing isolators also feature ribbed inner surface that prevents slippage and guards against carrier pipe coating damage. The outer surface may include any one of several molded runners to accommodate 2" (50.8mm) x 4" (101.6mm) or larger carrier/casing differentials.
One piece solid molded segments provide for maximum load bearing. Hardware includes cadmium plated steel studs, nuts and washers. A screwdriver is the only tool needed for installation.

Model HT Casing Isolators are designed primarily for smaller diameter steel or polyethylene carrier pipes (ANSI O.D. pipe without a bell or mechanical joint). We do not recommend that they be used on any carrier pipe over 12" in diameter or for installations over 300 feet long without consulting with PSI. PE Isolators should not be used on concrete carrier pipe.

 Typical Application for Model HT Casing Spacers

Recommended Maximum Spacing
Distance between all model HT Isolators/Spacers should not exceed 5-feet (1.5-meters) to 8-feet (2.4-meters) center-to-center. An isolator/Spacer should be placed within 2-feet (0.6-meters) on each side of a coupling or joint and within 1-foot (0.3-meters) of each end of the casing.
  • Band width = 5-inches (127mm)
  • May be used for high-temperature applications
  • Unique formulation of polymers allows isolator/spacer to be used in applications where temperatures may reach 266° F. (130° C.)
  • Ribbed inner surface prevents slippage and guards against coating damage.
  • Lightweight for ease of handling and installation.
  • Screwdriver only needed for installation.
  • Model available with non-metallic hardware.
  • Eliminates the need for blown sand or pea gravel





Tensile Strength


8,100 - 9,000 psi

Compressive Strength


12,500 psi

Water Absorption




266° F. Max. (130° C.)

Impact Strength


1.5 - 2.0 ft lb/in.
(0.8 - 1.07 newton-meter/com)

Dielectric Strength


425 Volts/Mil.



3/4" (19mm) through 12" (305mm) = 2-piece with molded-in runners.

Metallic - Bolts and Square Nuts = Plated Steel
Non-metallic - Bolts and Nuts = High Temp Plastic